I have the current licensed version. No matter what mp4 file I try to trim, the program runs for only 2 seconds and "finishes" the conversion. I used the AVS Video Editor Cleaner and reinstalled the program with the same result. I have used the product for years without a problem. I recently replaced my hard drive with an SSD and when I reinstalled the program, I consistently got this error. I have tried several presets and custom settings, but the results are the same. The output file is only a couple of kb. I even went back to version 7.5 and got the same results.